Steam cut-off valve (pneumatic)
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I would like to ask everyone: How should I choose a pneumatic cut-off valve? The conditions are as follows: 1. Low-pressure steam, with a pressure of 0.6 MPa and a temperature of around 165°C; a pneumatic cut-off valve is required. 2. Medium-pressure steam, with a pressure of 4.0 MPa and a temperature of around 250°C; a pneumatic cut-off valve is required. What type of valve should be chosen, and what materials should be used for the valve body and seals?
For a quick shut-off valve, go with a ball valve. Equipped with a solenoid valve. In an orderly manner. . . .
It depends on the leakage! Quick cut off, as mentioned above! ! It’s better to choose a hard-sealed one! ! Also, it is necessary to consider the diameter and parameters in order to determine which valve to choose
Generally, a ball valve with a hard seal is chosen.
What is the diameter of your valve? Are there any requirements regarding leakage? If the requirements for valve leakage are relatively low, I recommend using a ball valve; if the requirements are higher, then a ball valve is still a good choice! QQ: 928976489 (Your control valve consultant)
Actually, ball valves aren’t the best choice either! All the steam-operated ball valves we have here have been replaced! All use steam sleeve valves! It’s more effective than ball valves! Prolonged exposure to steam will wash grooves into the surface of the sphere, which will cause internal leakage in the valve!
Valve port diameter: DN25, DN40, DN50 – available for both low-pressure and medium-pressure steam； Different temperatures require different materials for the valve body and gaskets, right? I want to know what materials should be used at what temperatures And which valve type to choose?
Reply 6# wzp94349: It is used for cutting off rather than for adjustment
Due to flashing and cavitation effects associated with steam, I recommend using a sleeve valve; ball valves are not the best choice
What is a sleeve valve? ? Haven’t used it. A ball valve made of better quality material should be fine, right? Can flashing also cause damage to valves?